Add a little water and presto, you get a toxic downpour:
UNCW also tested rainwater samples to determine if GenX showed up there. When it did, they alerted the state and then tried to figure out where it was coming from. Ultimately, they determined that while GenX itself isn’t being spread through the air, a chemical that rapidly turns into GenX when mixed with water likely is coming from Chemours’ stacks.
Pam Seaton, the chair of UNCW’s department of chemistry and biochemistry, said, “The precusor to GenX at Chemours is what’s called an acid fluoride, and when it touches water it turns into GenX. What they emit, apparently, through the stacks at Chemours is the acid fluoride. ... We could actually see within minutes the precursor being converted to GenX, which then is wherever the rain takes it.”
I'd be willing to bet my last dollar that Chemours' chemists were well aware something like this would happen to those emissions, and I would also bet that installing some form of scrubbers could greatly reduce that effect. But that costs money, and you know what that means. Unless they are forced to install it, it ain't happening. GenX is also embedding itself into river bottom sediment, which means it will be seeping into the water for a long time even after all discharges have stopped: